{"id":692,"date":"2024-11-25T21:14:52","date_gmt":"2024-11-25T13:14:52","guid":{"rendered":"https:\/\/womeifei.cn\/?p=692"},"modified":"2024-11-25T21:14:52","modified_gmt":"2024-11-25T13:14:52","slug":"vuex-%e6%a0%b8%e5%bf%83%e6%a6%82%e5%bf%b5","status":"publish","type":"post","link":"https:\/\/womeifei.cn\/index.php\/2024\/11\/25\/vuex-%e6%a0%b8%e5%bf%83%e6%a6%82%e5%bf%b5\/","title":{"rendered":"Vuex-\u6838\u5fc3\u6982\u5ff5"},"content":{"rendered":"\n

\u4ec0\u4e48\u662fVuex?<\/p>\n\n\n\n

Vuex\u662fVue\u7684\u72b6\u6001\u7ba1\u7406\u5de5\u5177 \u72b6\u6001\u5c31\u662f\u6570\u636e \u53ef\u4ee5\u5e2e\u6211\u4eec\u7ba1\u7406Vue\u901a\u7528\u7684\u6570\u636e(\u591a\u7ec4\u4ef6\u5171\u4eab\u7684\u6570\u636e) <\/p>\n\n\n\n

Vuex\u7684\u4f18\u52bf<\/p>\n\n\n\n

*\u5171\u540c\u7ef4\u62a4\u4e00\u4efd\u6570\u636e \u6570\u636e\u96c6\u4e2d\u5316\u7ba1\u7406<\/p>\n\n\n\n

*\u54cd\u5e94\u5f0f\u53d8\u5316 <\/p>\n\n\n\n

*\u64cd\u4f5c\u7b80\u6d01(Vuex\u63d0\u4f9b\u4e86\u4e00\u4e9b\u8f85\u52a9\u51fd\u6570)<\/p>\n\n\n\n

\"\"<\/div>
\u5e94\u7528Vuex\u5bf9\u72b6\u6001\u8fdb\u884c\u7ba1\u7406\u793a\u610f\u56fe<\/figcaption><\/figure>\n\n\n\n

Vuex\u7684\u4f7f\u7528<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

1.\u5b89\u88c5:npm i vuex@3<\/p>\n\n\n\n

2.\u65b0\u5efastore\/index.js \u4e13\u95e8\u5b58\u653evuex<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

3.\u521b\u5efa\u4ed3\u5e93store\/index.js<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

4.\u5728main.js\u4e2d\u5bfc\u5165\u6302\u8f7d\u5230Vue\u5b9e\u4f8b\u4e0a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

State\u72b6\u6001<\/p>\n\n\n\n

state\u63d0\u4f9b\u552f\u4e00\u7684\u516c\u5171\u6570\u636e\u6e90<\/strong> \u6240\u6709\u5171\u4eab\u7684\u6570\u636e\u90fd\u8981\u7edf\u4e00\u653e\u5230store\u7684state\u4e2d\u5b58\u50a8 \u5728state\u5bf9\u8c61\u4e2d\u53ef\u4ee5\u6dfb\u52a0\u6211\u4eec\u60f3\u8981\u5171\u4eab\u7684\u6570\u636e<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u5982\u4f55\u8bbf\u95eeVuex\u4e2d\u6570\u636e?<\/strong><\/p>\n\n\n\n

1.\u901a\u8fc7$store\u76f4\u63a5\u8bbf\u95ee — > { { $store.state.count } }<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u53ef\u4ee5\u628astate\u5c5e\u6027\u5b9a\u4e49\u5728\u7ec4\u4ef6\u5185\u7684\u8ba1\u7b97\u5c5e\u6027\u4e2d \u8c03\u7528\u65f6\u4f1a\u65b9\u4fbf\u5f88\u591a<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u4f46\u6bcf\u6b21\u90fd\u50cf\u8fd9\u6837\u4e00\u4e2a\u4e2a\u63d0\u4f9b\u8ba1\u7b97\u5c5e\u6027\u592a\u9ebb\u70e6\u4e86 \u6211\u4eec\u8fd8\u6709\u66f4\u7b80\u5355\u7684\u8bed\u6cd5\u5e2e\u6211\u4eec\u83b7\u53d6state\u4e2d\u7684\u503c<\/p>\n\n\n\n

2.\u901a\u8fc7\u8f85\u52a9\u51fd\u6570mapState\u83b7\u53d6<\/p>\n\n\n\n

(1) \u5bfc\u5165mapState(mapState\u662fVuex\u4e2d\u7684\u4e00\u4e2a\u51fd\u6570)<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

(2) \u91c7\u7528\u6570\u7ec4\u5f62\u5f0f\u5f15\u5165state\u5c5e\u6027<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u5bf9\u8c61 \u5305\u542b\u8ba1\u7b97\u5c5e\u6027\u6210\u5458 (\u5c31\u662f\u4e00\u5806\u4e0b\u9762\u7684\u4e1c\u897f\u7ec4\u6210\u7684\u5bf9\u8c61)<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

(3) \u5229\u7528\u5c55\u5f00\u8fd0\u7b97\u7b26\u5c06\u5bfc\u51fa\u7684\u72b6\u6001\u6620\u5c04\u7ed9\u8ba1\u7b97\u5c5e\u6027<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

Vuex\u9075\u5faa\u5355\u5411\u6570\u636e\u6d41 <\/p>\n\n\n\n

\u7ec4\u4ef6\u4e2d\u4e0d\u80fd\u76f4\u63a5\u4fee\u6539\u4ed3\u5e93\u7684\u6570\u636e \u5982\u679c\u76f4\u63a5\u4fee\u6539\u6574\u4e2a\u9879\u76ee\u96be\u4ee5\u7ef4\u62a4(\u6570\u636e\u53d8\u4e86\u90fd\u4e0d\u77e5\u9053\u5728\u54ea\u6539\u7684)<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

state\u6570\u636e\u7684\u4fee\u6539\u53ea\u80fd\u901a\u8fc7mutations <\/strong>\u5e76\u4e14mutations\u5fc5\u987b\u662f\u540c\u6b65\u7684<\/p>\n\n\n\n

Mutations<\/p>\n\n\n\n

mutations\u662f\u4e00\u4e2a\u5bf9\u8c61 \u5bf9\u8c61\u4e2d\u5b58\u653e\u4fee\u6539state\u7684\u65b9\u6cd5<\/p>\n\n\n\n

\u5b9a\u4e49mutations<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u6dfb\u52a0\u4fee\u6539state\u65b9\u6cd5<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u7ec4\u4ef6\u4e2d\u63d0\u4ea4mutations<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u901a\u8fc7\u8fd9\u6837\u7684\u6b65\u9aa4\u5c31\u5b9e\u73b0\u4e86state\u4e2d\u6570\u636e\u7684\u4fee\u6539\u90fd\u662f\u5728store\u4e2d\u8fdb\u884c<\/strong> \u800c\u4e0d\u662f\u5728\u7ec4\u4ef6\u4e2d\u4fee\u6539 \u63d0\u9ad8\u4e86\u9879\u76ee\u7684\u53ef\u7ef4\u62a4\u6027<\/p>\n\n\n\n

mutation\u51fd\u6570\u4e5f\u53ef\u4ee5\u5e26\u53c2\u6570 (\u63d0\u4ea4\u53c2\u6570\u53ea\u80fd\u662f\u4e00\u4e2a \u82e5\u8981\u4f20\u591a\u4e2a \u53ef\u4ee5\u4f20\u9012\u4e00\u4e2a\u5bf9\u8c61)<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

Vuex\u4e2d\u503c\u548c\u7ec4\u4ef6\u4e2d\u7684input\u53cc\u5411\u7ed1\u5b9a<\/p>\n\n\n\n

\u8981\u6c42\u5b9e\u65f6\u8f93\u5165 \u5b9e\u65f6\u66f4\u65b0 \u5982\u4e0b\u56fe<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u8bf4\u5230\u53cc\u5411\u7ed1\u5b9a \u6211\u4eec\u53ef\u80fd\u81ea\u7136\u60f3\u5230\u4f7f\u7528v-model \u4f46\u8fd9\u662f\u9519\u8bef\u7684 \u56e0\u4e3a\u6211\u4eec\u521a\u521a\u63d0\u5230\u5728\u7ec4\u4ef6\u4e2d\u4e0d\u80fd\u4fee\u6539store\u4e2d\u6570\u636e\u7684\u503c \u5982\u679c\u4f7f\u7528v-model \u5f53\u6539\u53d8input\u8f93\u5165\u6846\u5185\u503c\u65f6 \u6839\u636e\u53cc\u5411\u7ed1\u5b9a \u5c31\u4fee\u6539\u4e86store\u4e2d\u6570\u636e\u7684\u503c<\/strong><\/p>\n\n\n\n

\u4f46\u6211\u4eec\u77e5\u9053v-model\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u8bed\u6cd5\u7cd6 \u7531:value+@input\u7ec4\u6210 \u6211\u4eec\u53ef\u4ee5\u5c06\u8fd9\u4e2a\u6b65\u9aa4\u62c6\u5206 <\/p>\n\n\n\n

\u5b9e\u73b0\u6b65\u9aa4<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

\u8f85\u52a9\u51fd\u6570-mapMutations<\/p>\n\n\n\n

\u5b83\u628a\u4f4d\u4e8emutations\u4e2d\u7684\u65b9\u6cd5\u63d0\u53d6\u4e86\u51fa\u6765<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u4e0a\u9762\u4ee3\u7801\u5b9e\u73b0\u5c06mutations\u7684\u65b9\u6cd5\u5bfc\u5165methods\u4e2d \u7b49\u4ef7\u4e8e\u4e0b\u9762\u7684\u4ee3\u7801<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u6b64\u65f6\u5c31\u53ef\u4ee5\u901a\u8fc7this.addCount\u8c03\u7528\u4e86<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

!\u6ce8\u610f!<\/strong>:Vuex\u4e2dmutations\u4e2d\u8981\u6c42\u4e0d\u80fd\u5199\u5f02\u6b65\u4ee3\u7801 \u5982\u679c\u6709\u5f02\u6b65ajax\u8bf7\u6c42 \u5e94\u8be5\u653e\u7f6e\u5728actions\u4e2d<\/p>\n\n\n\n

Actions<\/p>\n\n\n\n

\u8d1f\u8d23\u8fdb\u884c\u5f02\u6b65\u64cd\u4f5c<\/p>\n\n\n\n

\u5b9a\u4e49actions<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u5728\u7ec4\u4ef6\u4e2d\u901a\u8fc7dispatch\u8c03\u7528<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

actions\u5b9e\u73b0\u6b65\u9aa4\u89e3\u6790<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u8f85\u52a9\u51fd\u6570-mapActions<\/p>\n\n\n\n

\u628a\u4f4d\u4e8eactions\u4e2d\u7684\u65b9\u6cd5\u63d0\u53d6\u51fa\u6765 \u6620\u5c04\u5230\u7ec4\u4ef6methods\u4e2d<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

getters<\/p>\n\n\n\n

\u9664\u4e86state\u4e4b\u5916 \u6709\u65f6\u6211\u4eec\u8fd8\u9700\u8981\u4ecestate\u4e2d\u7b5b\u9009\u51fa\u7b26\u5408\u6761\u4ef6\u7684\u4e00\u4e9b\u6570\u636e \u8fd9\u4e9b\u6570\u636e\u662f\u4f9d\u8d56state\u7684 \u6b64\u65f6\u4f1a\u7528\u5230getters<\/p>\n\n\n\n

\u4f8b\u5982 state\u5b9a\u4e49\u4e86list \u4e3a1-10\u7684\u6570\u7ec4 \u7ec4\u4ef6\u4e2d\u9700\u8981\u663e\u793a\u6240\u6709\u5927\u4e8e5\u7684\u6570\u636e \u8fd9\u91cc\u53ef\u4ee5\u7528\u5230getters<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u5b9a\u4e49getters<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u4f7f\u7528getters<\/p>\n\n\n\n

(1) \u539f\u59cb\u65b9\u5f0f<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

(2) \u8f85\u52a9\u51fd\u6570-mapGetters<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

\u4f7f\u7528\u5c0f\u7ed3<\/p>\n\n\n\n

\"\"<\/div><\/figure>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

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